Abstrakt

Novel Estimation of MISO-OFDM System Using CDD

R Jeyanthi,N Malmurugan,K Vidhya,M Suganya

In Orthogonal Frequency Division Multiplexing (OFDM) systems, the cyclic-delay diversity (CDD)Scheme is a low-complexity means of increasing transmit diversity. Because it requires only one inverse discrete Fourier transform (IDFT) operation at the transmitter. The mean square error (MSE) of both the least square (LS) channel estimate and the minimum mean square error (MMSE) channel estimate are applied in the design of optimum pilot sequence for CDD MISO -OFDM system to enhance channel estimation performance. The simulation results confirm that the proposed pilot design minimizes the MSE of both the LS and the MMSE channel estimates in MISO-OFDM system and compared with the theoretical values